def test_make_unique_nickname(self):
u = User(name='john', email='*****@*****.**', picture="")
self.db.session.add(u)
self.db.session.commit()
nickname = User.make_unique_nickname('john', self.db.session)
assert nickname != 'john'
u = User(name=nickname, email='*****@*****.**', picture="")
self.db.session.add(u)
self.db.session.commit()
nickname2 = User.make_unique_nickname('john', self.db.session)
assert nickname2 != 'john'
assert nickname2 != nickname
